Phys.org news tagged with:magnetic field sensorhttp://phys.org/
en-usPhys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.Detecting small metallic contaminants in food via magnetizationThe detection of metallic contaminants in foods is important for our health and safety. However, existing inspection methods have limitations. For instance, the X-ray radiation method cannot detect contaminants with sizes smaller than 1 mm with current practical X-ray levels, and it cannot be applied for the inspection of foods that have lactic acid bacteria because X-ray radiation causes ionization of such foods.http://phys.org/news/2015-07-small-metallic-contaminants-food-magnetization.html
General Physics Wed, 29 Jul 2015 09:48:41 EDTnews357382113Researchers discover first sensor of Earth's magnetic field in an animalA team of scientists and engineers at The University of Texas at Austin has identified the first sensor of the Earth's magnetic field in an animal, finding in the brain of a tiny worm a big clue to a long-held mystery about how animals' internal compasses work.http://phys.org/news/2015-06-sensor-earth-magnetic-field-animal.html
Plants & Animals Wed, 17 Jun 2015 11:54:53 EDTnews353760864Researchers exploring spintronics in grapheneElectronics is based on the manipulation of electrons and other charge carriers, but in addition to charge, electrons possess a property known as spin. When spin is manipulated with magnetic and electric fields, the result is a spin-polarised current that carries more information than is possible with charge alone. Spin-transport electronics, or spintronics, is a subject of active investigation within Europe's Graphene Flagship.http://phys.org/news/2015-05-exploring-spintronics-graphene.html
Nanophysics Wed, 06 May 2015 07:10:01 EDTnews350114046Direct visualization of magnetoelectric domainsA novel microscopy technique called magnetoelectric force microscopy (MeFM) was developed to detect the local cross-coupling between magnetic and electric dipoles. Combined experimental observation and theoretical modeling provide understanding on how a bulk linear magnetoelectric effect can be realized in a new family of materials.http://phys.org/news/2015-04-visualization-magnetoelectric-domains.html
General Physics Mon, 27 Apr 2015 06:07:59 EDTnews349333673Cost-effective production of magnetic sensorsThey are found wherever other measurement methods fail: magnetic sensors. They defy harsh environmental conditions and also function in fluids. A new procedure is now revolutionizing the production of two-dimensional magnetic sensors: They now only cost half, and production time is reduced by 50 percent.http://phys.org/news/2015-04-cost-effective-production-magnetic-sensors.html
Engineering Wed, 01 Apr 2015 08:10:01 EDTnews347089406Sensor cable monitors fences of all kinds and can even detect low-level drone fly-bysFenced-in areas, such as airports, nuclear power stations, industrial sites, or private plots of land, can now be monitored thanks to novel sensor technology that has been developed by a team of experimental physicists, led by Professor Uwe Hartmann at Saarland University. The sensors respond immediately as soon as someone tries to climb over or cut through the fence, providing information on the precise location of the security breach. They are even able to detect a low-flying drone passing overhead. The thin cable containing the magnetic field sensors can be easily installed on perimeter fences of all kinds. The research team is currently working on developing the system so that it can recognize the cause of a disturbance and can automatically identify false alarms triggered by wind or animals. The team is collaborating with industrial partners to produce a cable suitable for mass production. The technology will be shown at HANNOVER MESSE from April 13th to April 17th.http://phys.org/news/2015-03-sensor-cable-kinds-low-level-drone.html
Engineering Wed, 25 Mar 2015 08:33:43 EDTnews346491216Researchers equip humans with magnetic senseScientists from Germany and Japan have developed a new magnetic sensor, which is thin, robust and pliable enough to be smoothly adapted to human skin, even to the most flexible part of the human palm. This is feeding the vision to equip humans with magnetic sense.http://phys.org/news/2015-02-equip-humans-magnetic.html
General Physics Tue, 03 Feb 2015 07:28:54 EDTnews342170926Using a single molecule to create a new magnetic field sensorResearchers at the University of Liverpool and University College London (UCL) have shown a new way to use a single molecule as a magnetic field sensor.http://phys.org/news/2015-01-molecule-magnetic-field-sensor.html
Nanophysics Fri, 30 Jan 2015 08:20:01 EDTnews341826923Line camera makes magnetic field lines visible in 3D and real timeFraunhofer scientists have developed a high-resolution magnetic line camera to measure magnetic fields in real time. Field lines in magnetic systems such as generators or motors, which are invisible to the human eye, can be made visible using this camera. It is especially suitable for industrial applications, for example in quality assurance during the manufacture of magnets. A prototype will be on display for the first time at electronica 2014 in Munich from November 11-14 (Hall A4 / Booth 113).http://phys.org/news/2014-10-line-camera-magnetic-field-lines.html
Engineering Mon, 27 Oct 2014 09:34:54 EDTnews333621283Oulu team explores magnetic communication for smartphonesA system called Pulse uses the magnetic field sensor, or magnetometer, for the compass app in smartphones to get messages in the form of a varying magnetic field produced by a nearby electromagnet. The report in New Scientist features the work of Vassilis Kostakos and team at the University of Oulu Department of Computer Science and Engineering in Finland. They built a test electromagnet system that communicated with Android phones. They encoded data in a varying magnetic field and they could transmit items such as a web address and MIDI (Musical Instrument Digital Interface) music sequence from the electromagnet to the phone. MIDI is a standard that allows electronic musical instruments, computers and other devices to connect and communicate with one another.http://phys.org/news/2014-07-oulu-team-explores-magnetic-smartphones.html
Engineering Sun, 06 Jul 2014 17:03:02 EDTnews323884965Scientists develop force sensor from carbon nanotubesA group of researchers from Russia, Belarus and Spain, including Moscow Institute of Physics and Technology professor Yury Lozovik, have developed a microscopic force sensor based on carbon nanotubes. The device is described in an article published in the journal Computational Materials Science and is also available as a preprint.http://phys.org/news/2014-06-scientists-sensor-carbon-nanotubes.html
Nanophysics Mon, 30 Jun 2014 09:44:15 EDTnews323340245Volvo explores road-integrated magnets for autonomous cars(Phys.org) —Volvo has been testing the efficacy of magnets to keep self-driving cars moving safely on the road. The idea is for magnets to help the cars identify where they need to be in lanes. The Volvo Car Group tested how well the road magnets in the roadway can actually support accurate positioning. Project leaders described the magnets as serving up an invisible railway for position accuracy. By detecting the magnets a car can constantly adjust its path.http://phys.org/news/2014-03-volvo-explores-road-integrated-magnets-autonomous.html
Engineering Thu, 13 Mar 2014 13:20:03 EDTnews313934014Students invent 'Aura' musical instrument using gloves (w/ Video)Imagine holding music in your hands. That's what you can do with the Aura, a new electronic musical instrument conceived by Cornell University engineering students.http://phys.org/news/2014-02-students-aura-musical-instrument-gloves.html
Engineering Wed, 19 Feb 2014 08:59:06 EDTnews312022725Steering by peeking: Physicists control quantum particles by looking at themScientists from the FOM Foundation and Delft University of Technology have manipulated a quantum particle, merely by looking at it in a smart way. By adjusting the strength of their measurement according to earlier measurement outcomes, they managed to steer the particle towards a desired state. The scientists published their results online on 16 February 2014 in Nature Physics.http://phys.org/news/2014-02-peeking-physicists-quantum-particles.html
Quantum Physics Mon, 17 Feb 2014 13:03:42 EDTnews311864599Revolutionary electrical current sensors harvest wasted electromagnetic energyElectricity is the lifeblood of modern cities. It flows at every moment and everywhere to power up everything from home appliances which improve our comfort and convenience, to services like transportation, building, communication and manufacturing that are essential to our daily life. To ensure a reliable operation of power grids and a proper delivery of electricity to where it needs to be, it is crucial to have a loyal guard to keep watch on the activities of electricity transport. As technology advances, the safety, reliability and availability of electrical engineering assets and public utilities can now be guarded by one tiny chip of electrical current sensors.http://phys.org/news/2014-01-revolutionary-electrical-current-sensors-harvest.html
Engineering Tue, 28 Jan 2014 07:11:38 EDTnews310115488Researchers develop new method to control nanoscale diamond sensorsDiamonds may be a girl's best friend, but they could also one day help us understand how the brain processes information, thanks to a new sensing technique developed at MIT.http://phys.org/news/2014-01-method-nanoscale-diamond-sensors.html
Nanophysics Fri, 24 Jan 2014 10:51:42 EDTnews309783081Size matters in the giant magnetoresistance effect in semiconductorsIn a paper appearing in Nature's Scientific Reports, Dr. Ramesh Mani, professor of physics and astronomy at Georgia State University, reports that a giant magnetoresistance effect depends on the physical size of the device in the GaAs/AlGaAs semiconductor system.http://phys.org/news/2013-10-size-giant-magnetoresistance-effect-semiconductors.html
Condensed Matter Tue, 15 Oct 2013 13:44:13 EDTnews301063438Ferromagnetic and antiferromagnetic – at the same time(Phys.org) —Researchers from the Paul Scherrer Institute (PSI) have made thin, crystalline layers of the material LuMnO3 that are both ferromagnetic and antiferromagnetic.http://phys.org/news/2013-07-ferromagnetic-antiferromagnetic.html
General Physics Fri, 19 Jul 2013 07:53:38 EDTnews293439189Electronics: Graphene makes a magnetic switch(Phys.org) —Tiny nanoribbons of carbon could be used to make a magnetic field sensor for novel electronic devices.http://phys.org/news/2013-07-electronics-graphene-magnetic.html
Nanomaterials Wed, 17 Jul 2013 05:40:01 EDTnews293257816Molecular chains hypersensitive to magnetic fieldsResearchers of MESA+, the research institute for nanotechnology of the University of Twente, in cooperation with researchers of the University of Strasbourg and Eindhoven University of Technology, are the first to successfully create perfect one-dimensional molecular wires of which the electrical conductivity can almost entirely be suppressed by a weak magnetic field at room temperature. The underlying mechanism is possibly closely related to the biological compass used by some migratory birds to find their bearings in the geomagnetic field. This spectacular discovery may lead to radically new magnetic field sensors, for smartphones for example. The leading scientific journal Science publishes the research results on 4 July.http://phys.org/news/2013-07-molecular-chains-hypersensitive-magnetic-fields.html
Nanophysics Thu, 04 Jul 2013 14:00:16 EDTnews2921633873-D Magnetic field measurementMagnetic field sensors are a contact- and wear-free means of measuring the position of machine parts and products. A new generation of Hall sensors is now making the process even more precise and free of interference.http://phys.org/news/2013-06-d-magnetic-field.html
Engineering Tue, 11 Jun 2013 08:50:01 EDTnews290157910New technique helps robotic vehicles find their way(Phys.org) —A Wayne State University researcher understands that the three most important things about real estate also apply to small ground robotic vehicles: location, location, location.http://phys.org/news/2013-05-technique-robotic-vehicles.html
Engineering Tue, 14 May 2013 12:43:18 EDTnews287754191New sensor cable enables remote monitoring of miles of perimeter fencingAirports, nuclear power stations, industrial and research sites, or even your own garden – there are many places that need to be protected against unauthorized access, and often protection is required 24 hours a day, seven days a week. Up until now, the sheer length of the perimeter to be protected and the high costs involved made this sort of protection impossible at many sites. Working in collaboration with a number of companies, research scientists at Saarland University have developed a new type of surveillance technology that enables extended perimeters to be monitored and protected at low cost. The new technology is based on magnetometers (magnetic field sensors) that can be incorporated within smart cables of essentially any length. These cables can themselves be installed into fencing or roadways. The research team is presenting its innovative technology at the major international technology fair Hannover Messe from April 8th to April 12th (Stand C 40, Hall 2 ‒ Saarland Research and Innovation Stand).http://phys.org/news/2013-03-sensor-cable-enables-remote-miles.html
Engineering Wed, 27 Mar 2013 09:50:17 EDTnews283596607Teasing out the nature of structural instabilities in ceramic compounds(Phys.org) —Materials scientists have been for some time preparing artificial ceramic systems that simply do not exist in nature, allowing scientists to engineer particularly interesting and even technologically applicable behaviors. But sometimes nature itself finds ingenious solutions to physical problems that we have not been able to solve.http://phys.org/news/2013-03-nature-instabilities-ceramic-compounds.html
Condensed Matter Thu, 14 Mar 2013 10:00:02 EDTnews282471945Wireless window sentinelWindow contacts tell users if a window is open or closed. Typically, such sensors are wire-based. Scientists working with industry partners recently developed a new system that operates without wires or batteries. It draws its power from its environment: from sunlight and ambient heat.http://phys.org/news/2012-09-wireless-window-sentinel.html
Engineering Wed, 05 Sep 2012 11:17:04 EDTnews266062616Transistors made from graphene nanoribbons make efficient magnetic field sensorsGraphene &#151; a single layer of carbon atoms packed in a hexagonal lattice &#151; has a number of appealing properties owing to its two-dimensional geometry. It has, for one thing, good electrical conductivity that is of interest to high-speed electronic applications. Seng Ghee Tan at the A*STAR Data Storage Institute and co-workers at the National University of Singapore have now shown that graphene has additional applications in magnetic data storage. They have developed a method to measure magnetic fields by detecting changes in the electrical resistance of graphene. &#147;The findings could open up new avenues in the development of miniaturized magnetic field sensors,&#148; says Tan.http://phys.org/news/2012-08-transistors-graphene-nanoribbons-efficient-magnetic.html
Nanomaterials Wed, 15 Aug 2012 09:25:20 EDTnews264241507A 'dirt cheap' magnetic field sensor from 'plastic paint': Spintronic device uses thin-film organic semiconductor(Phys.org) -- University of Utah physicists developed an inexpensive, highly accurate magnetic field sensor for scientific and possibly consumer uses based on a &#147;spintronic&#148; organic thin-film semiconductor that basically is &#147;plastic paint.&#148;http://phys.org/news/2012-06-dirt-cheap-magnetic-field-sensor.html
General Physics Tue, 12 Jun 2012 11:00:01 EDTnews258705609An unlikely route to ferroelectricity(Phys.org) -- Ferroelectricity, which was first observed in the 1940s, is an interesting phenomenon involving the spontaneous (non-induced) formation of charge polarization (separation of charge) in certain materials. This is analogous to the spontaneous formation of magnetic fields in iron and other elements via ferromagnetism. Multiferroics (materials exhibiting both ferroelectricity and ferromagnetism) have attracted increased interest of late due to their potential use in various technologies, such as improved electronic memory chips and highly sensitive magnetic field sensors. The crystalline material lutetium-iron-oxide (LuFe2O4) has, in turn, garnered much attention due to its purported multiferroic properties.http://phys.org/news/2012-05-route-ferroelectricity.html
Condensed Matter Fri, 18 May 2012 10:00:02 EDTnews256550862Hall effect magnetic field sensors for high temperatures and harmful radiation environmentsToyohashi Tech researchers have fabricated Hall effect magnetic field sensors operable at least 400 C and in extreme radiation conditions using gallium nitride-based heterostructures a with two-dimensional electron gas.http://phys.org/news/2012-03-hall-effect-magnetic-field-sensors.html
General Physics Thu, 22 Mar 2012 07:46:45 EDTnews251621181Tongue drive system goes inside the mouth to improve performance and user comfortThe Tongue Drive System is getting less conspicuous and more capable. Tongue Drive is a wireless device that enables people with high-level spinal cord injuries to operate a computer and maneuver an electrically powered wheelchair simply by moving their tongues.http://phys.org/news/2012-02-tongue-mouth-user-comfort.html
Engineering Mon, 20 Feb 2012 04:43:54 EDTnews248935061